Eric Peterson (born May 14, 1964) is an Americanguitarist. He is best known as the only constant member of the US thrash metal band Testament. Peterson has also formed a side-project black metal band called Dragonlord, in which he plays guitar and also sings. In Testament, Peterson was originally a rhythm guitarist while Alex Skolnick handled all lead work. More recently though Peterson plays leads along with Skolnick.
Peterson was married to Kirk Hammett's ex-wife Rebecca, with whom he has one child. They are now divorced.
Peterson's main guitars have been Gibson models for most of his career in Testament, primarily a black Explorer model and a Les Paul. Recently however, he is endorsing Dean Guitars and has been using his own signature Dean V guitar.